/*
* This file contains the TTY driver table for the PPCn_60x
*
* COPYRIGHT (c) 1998 by Radstone Technology
*
*
* THIS FILE IS PROVIDED TO YOU, THE USER, "AS IS", WITHOUT WARRANTY OF ANY
* KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTY OF FITNESS FOR A PARTICULAR PURPOSE. THE ENTIRE RISK
* AS TO THE QUALITY AND PERFORMANCE OF ALL CODE IN THIS FILE IS WITH YOU.
*
* You are hereby granted permission to use, copy, modify, and distribute
* this file, provided that this notice, plus the above copyright notice
* and disclaimer, appears in all copies. Radstone Technology will provide
* no support for this code.
*
* $Id$
*/
#include <libchip/serial.h>
#include <libchip/mc68681.h>
#include <libchip/z85c30.h>
#include "i8042vga.h"
#include "ns16550cfg.h"
#include "z85c30cfg.h"
#include <pci.h>
#define PMX1553_BUS 2
#define PMX1553_SLOT 1
/*
* Based on BSP configuration information decide whether to do polling IO
* or interrupt driven IO.
*/
#if (CONSOLE_USE_INTERRUPTS)
#define NS16550_FUNCTIONS &ns16550_fns
#define Z85C30_FUNCTIONS &z85c30_fns
#else
#define NS16550_FUNCTIONS &ns16550_fns_polled
#define Z85C30_FUNCTIONS &z85c30_fns_polled
#endif
/*
* Configuration specific probe routines
*/
static boolean config_PMX1553_probe(int minor);
static boolean config_z85c30_probe(int minor);
/*
* The following table configures the console drivers used in this BSP.
*
* The first entry which, when probed, is available, will be named /dev/console,
* all others being given the name indicated.
*
* Each field is interpreted thus:
*
* sDeviceName This is the name of the device.
* pDeviceFns This is a pointer to the set of driver routines to use.
* pDeviceFlow This is a pointer to the set of flow control routines to
* use. Serial device drivers will typically supply RTSCTS
* and DTRCTS handshake routines for DCE to DCE communication,
* however for DCE to DTE communication, no such routines
* should be necessary as RTS will be driven automatically
* when the transmitter is active.
* ulMargin The high water mark in the input buffer is set to the buffer
* size less ulMargin. Once this level is reached, the driver's
* flow control routine used to stop the remote transmitter will
* be called. This figure should be greater than or equal to
* the number of stages of FIFO between the transmitter and
* receiver.
* ulHysteresis After the high water mark specified by ulMargin has been
* reached, the driver's routine to re-start the remote
* transmitter will be called once the level in the input
* buffer has fallen by ulHysteresis bytes.
* pDeviceParams This contains either device specific data or a pointer to a
* device specific structure containing additional information
* not provided in this table.
* ulCtrlPort1 This is the primary control port number for the device. This
* may be used to specify different instances of the same device
* type.
* ulCtrlPort2 This is the secondary control port number, of use when a given
* device has more than one available channel.
* ulDataPort This is the port number for the data port of the device
* ulIntVector This encodes the interrupt vector of the device.
*
*/
console_tbl Console_Port_Tbl[] = {
{
"/dev/vga", /* sDeviceName */
SERIAL_CUSTOM, /* deviceType */
&i8042vga_fns, /* pDeviceFns */
NULL, /* deviceProbe */
NULL, /* pDeviceFlow */
0, /* ulMargin */
0, /* ulHysteresis */
(void *)0, /* pDeviceParams */
I8042_CS, /* ulCtrlPort1 */
0, /* ulCtrlPort2 */
I8042_DATA, /* ulDataPort */
Read_ns16550_register, /* getRegister */
Write_ns16550_register, /* setRegister */
NULL, /* getData */
NULL, /* setData */
0, /* ulClock */
PPCN_60X_IRQ_KBD /* ulIntVector */
},
{
"/dev/com1", /* sDeviceName */
SERIAL_NS16550, /* deviceType */
NS16550_FUNCTIONS, /* pDeviceFns */
NULL, /* deviceProbe */
&ns16550_flow_RTSCTS, /* pDeviceFlow */
16, /* ulMargin */
8, /* ulHysteresis */
(void *)9600, /* baud rate */ /* pDeviceParams */
NS16550_PORT_A, /* ulCtrlPort1 */
0, /* ulCtrlPort2 */
NS16550_PORT_A, /* ulDataPort */
Read_ns16550_register, /* getRegister */
Write_ns16550_register, /* setRegister */
NULL, /* getData */
NULL, /* setData */
0, /* ulClock */
PPCN_60X_IRQ_COM1 /* ulIntVector */
},
{
"/dev/ser1", /* sDeviceName */
SERIAL_NS16550, /* deviceType */
NS16550_FUNCTIONS, /* pDeviceFns */
config_PMX1553_probe, /* deviceProbe */
&ns16550_flow_RTSCTS, /* pDeviceFlow */
80, /* ulMargin */
8, /* ulHysteresis */
(void *)9600, /* baud rate */ /* pDeviceParams */
PMX1553_BUS, /* PCI bus */ /* ulCtrlPort1 */
PMX1553_SLOT, /* PCI slot */ /* ulCtrlPort2 */
1, /* Channel 1-4 */ /* ulDataPort */
NULL, /* getRegister */
NULL, /* setRegister */
NULL, /* getData */
NULL, /* setData */
0, /* ulClock */
0 /* RS232 */ /* ulIntVector */
},
{
"/dev/ser2", /* sDeviceName */
SERIAL_NS16550, /* deviceType */
NS16550_FUNCTIONS, /* pDeviceFns */
config_PMX1553_probe, /* deviceProbe */
&ns16550_flow_RTSCTS, /* pDeviceFlow */
80, /* ulMargin */
8, /* ulHysteresis */
(void *)9600, /* baud rate */ /* pDeviceParams */
PMX1553_BUS, /* PCI bus */ /* ulCtrlPort1 */
PMX1553_SLOT, /* PCI slot */ /* ulCtrlPort2 */
2, /* Channel 1-4 */ /* ulDataPort */
Read_ns16550_register, /* getRegister */
Write_ns16550_register, /* setRegister */
NULL, /* getData */
NULL, /* setData */
0, /* ulClock */
0 /* RS232 */ /* ulIntVector */
},
{
"/dev/ser3", /* sDeviceName */
SERIAL_NS16550, /* deviceType */
NS16550_FUNCTIONS, /* pDeviceFns */
config_PMX1553_probe, /* deviceProbe */
&ns16550_flow_RTSCTS, /* pDeviceFlow */
96, /* ulMargin */
8, /* ulHysteresis */
(void *)57600, /* baud rate */ /* pDeviceParams */
PMX1553_BUS, /* PCI bus */ /* ulCtrlPort1 */
PMX1553_SLOT, /* PCI slot */ /* ulCtrlPort2 */
3, /* Channel 1-4 */ /* ulDataPort */
Read_ns16550_register, /* getRegister */
Write_ns16550_register, /* setRegister */
NULL, /* getData */
NULL, /* setData */
0, /* ulClock */
0 /* RS232 */ /* ulIntVector */
},
{
"/dev/ser4", /* sDeviceName */
SERIAL_NS16550, /* deviceType */
NS16550_FUNCTIONS, /* pDeviceFns */
config_PMX1553_probe, /* deviceProbe */
&ns16550_flow_RTSCTS, /* pDeviceFlow */
96, /* ulMargin */
8, /* ulHysteresis */
(void *)57600, /* baud rate */ /* pDeviceParams */
PMX1553_BUS, /* PCI bus */ /* ulCtrlPort1 */
PMX1553_SLOT, /* PCI slot */ /* ulCtrlPort2 */
4, /* Channel 1-4 */ /* ulDataPort */
Read_ns16550_register, /* getRegister */
Write_ns16550_register, /* setRegister */
NULL, /* getData */
NULL, /* setData */
0, /* ulClock */
0 /* RS232 */ /* ulIntVector */
},
#if !PPCN_60X_USE_DINK
{
"/dev/com2", /* sDeviceName */
SERIAL_NS16550, /* deviceType */
NS16550_FUNCTIONS, /* pDeviceFns */
NULL, /* deviceProbe */
&ns16550_flow_RTSCTS, /* pDeviceFlow */
16, /* ulMargin */
8, /* ulHysteresis */
(void *)9600, /* baud rate */ /* pDeviceParams */
NS16550_PORT_B, /* ulCtrlPort1 */
0, /* ulCtrlPort2 */
NS16550_PORT_B, /* ulDataPort */
Read_ns16550_register, /* getRegister */
Write_ns16550_register, /* setRegister */
NULL, /* getData */
NULL, /* setData */
0, /* ulClock */
PPCN_60X_IRQ_COM2 /* ulIntVector */
},
#endif
{
"/dev/com3", /* sDeviceName */
SERIAL_Z85C30, /* deviceType */
Z85C30_FUNCTIONS, /* pDeviceFns */
config_z85c30_probe, /* deviceProbe */
&z85c30_flow_RTSCTS, /* pDeviceFlow */
16, /* ulMargin */
8, /* ulHysteresis */
(void *)9600, /* baud rate */ /* pDeviceParams */
Z85C30_CTRL_A, /* ulCtrlPort1 */
Z85C30_CTRL_A, /* ulCtrlPort2 */
Z85C30_DATA_A, /* ulDataPort */
Read_85c30_register, /* getRegister */
Write_85c30_register, /* setRegister */
Read_85c30_data, /* getData */
Write_85c30_data, /* setData */
0, /* ulClock */
PPCN_60X_IRQ_COM3_4 /* ulIntVector */
},
{
"/dev/com4", /* sDeviceName */
SERIAL_Z85C30, /* deviceType */
Z85C30_FUNCTIONS, /* pDeviceFns */
config_z85c30_probe, /* deviceProbe */
&z85c30_flow_RTSCTS, /* pDeviceFlow */
16, /* ulMargin */
8, /* ulHysteresis */
(void *)9600, /* baud rate */ /* pDeviceParams */
Z85C30_CTRL_B, /* ulCtrlPort1 */
Z85C30_CTRL_A, /* ulCtrlPort2 */
Z85C30_DATA_B, /* ulDataPort */
Read_85c30_register, /* getRegister */
Write_85c30_register, /* setRegister */
Read_85c30_data, /* getData */
Write_85c30_data, /* setData */
0, /* ulClock */
PPCN_60X_IRQ_COM3_4 /* ulIntVector */
}
};
/*
* Define serial port write registers structure.
*/
typedef volatile struct _SP_WRITE_REGISTERS {
unsigned char TransmitBuffer;
unsigned char InterruptEnable;
unsigned char FifoControl;
unsigned char LineControl;
unsigned char ModemControl;
unsigned char Reserved1;
unsigned char ModemStatus;
unsigned char ScratchPad;
} SP_WRITE_REGISTERS, *PSP_WRITE_REGISTERS;
static boolean config_PMX1553_probe(int minor)
{
unsigned8 ucBusNumber, ucSlotNumber, ucChannel;
unsigned8 ucIntLine;
unsigned32 ulPortBase, ulMemBase, ulDeviceID;
unsigned8 *pucSIO_cir, *pucUart_int_sr, *pucUartDevIntReg;
PSP_WRITE_REGISTERS pNS16550Write;
/*
* Extract PCI bus/slot and channel number
*/
ucBusNumber=Console_Port_Tbl[minor].ulCtrlPort1;
ucSlotNumber=Console_Port_Tbl[minor].ulCtrlPort2;
ucChannel=Console_Port_Tbl[minor].ulDataPort;
PCIConfigRead32(ucBusNumber,
ucSlotNumber,
0,
PCI_CONFIG_VENDOR_LOW,
&ulDeviceID);
if(ulDeviceID!=0x000111b5)
{
return FALSE;
}
/*
* At this point we know we have a PMC1553 or PMX1553 card
*
* Check for PMX1553 uart legacy IO ports
*/
PCIConfigRead32(ucBusNumber,
ucSlotNumber,
0,
PCI_CONFIG_BAR_3,
&ulPortBase);
if(ulPortBase==0)
{
/*
* This is either a PMC1553 or we can't see the uart
* registers
*/
return FALSE;
}
PCIConfigRead32(ucBusNumber,
ucSlotNumber,
0,
PCI_CONFIG_BAR_2,
&ulMemBase);
pucUartDevIntReg=(unsigned8 *)(PCI_MEM_BASE+ulMemBase);
pucUart_int_sr=(unsigned8 *)(PCI_MEM_BASE+ulMemBase+0x10);
pucSIO_cir=(unsigned8 *)(PCI_MEM_BASE+ulMemBase+0x18);
/*
* Use ulIntVector field to select RS232/RS422
*/
if(Console_Port_Tbl[minor].ulIntVector==0)
{
/*
* Select RS232 mode
*/
*pucSIO_cir&=~(1<<(ucChannel-1));
}
else
{
/*
* Select RS422 mode
*/
*pucSIO_cir|=1<<(ucChannel-1);
}
EIEIO;
/*
* Bring device out of reset
*/
*pucSIO_cir&=0xbf;
EIEIO;
/*
* Enable all channels as active
*/
*pucSIO_cir|=0x10;
EIEIO;
*pucSIO_cir&=0xdf;
PCIConfigRead8(ucBusNumber,
ucSlotNumber,
0,
PCI_CONFIG_INTERRUPTLINE,
&ucIntLine);
ulPortBase&=~PCI_ADDRESS_IO_SPACE;
ulPortBase+=8*(ucChannel-1);
Console_Port_Tbl[minor].ulCtrlPort1=
Console_Port_Tbl[minor].ulDataPort=ulPortBase;
if(Console_Port_Tbl[minor].pDeviceFns!=&ns16550_fns_polled)
{
Console_Port_Tbl[minor].ulIntVector=PPCN_60X_IRQ_PCI(ucIntLine);
/*
* Enable interrupt
*/
*pucUart_int_sr=(~*pucUart_int_sr)&(0x08<<ucChannel);
/*
* Enable interrupt to PCI
*/
*pucUartDevIntReg=(~*pucUartDevIntReg)&0x80;
}
else
{
/*
* Disable interrupt
*/
*pucUart_int_sr&=(0x08<<ucChannel);
}
/*
* Enable Auto CTS to facilitate flow control
*/
pNS16550Write=(PSP_WRITE_REGISTERS)Console_Port_Tbl[minor].ulCtrlPort1;
/*
* Enable special register set and unlock Enhanced Feature Register
*/
outport_byte(&pNS16550Write->LineControl, 0xbf);
/*
* Unlock enhanced function bits
*/
outport_byte(&pNS16550Write->FifoControl, 0x10);
/*
* Disable special register set and lock Enhanced Feature Register
*/
outport_byte(&pNS16550Write->LineControl, 0);
/*
* Select div 1
*/
outport_byte(&pNS16550Write->ModemControl, 0x00);
/*
* Enable special register set and unlock Enhanced Feature Register
*/
outport_byte(&pNS16550Write->LineControl, 0xbf);
/*
* Lock enhanced function bits and enable auto CTS
*/
outport_byte(&pNS16550Write->FifoControl, 0x80);
/*
* Disable special register set and lock Enhanced Feature Register
*/
outport_byte(&pNS16550Write->LineControl, 0);
/*
* The PMX1553 currently uses a 16 MHz clock rather than the
* 7.3728 MHz clock described in the ST16C654 data sheet. When
* available, 22.1184 MHz will be used allowing rates up to
* 1382400 baud (RS422 only).
*/
#if 1
/*
* Scale requested baud rate for 16 MHz clock
*/
(unsigned32)Console_Port_Tbl[minor].pDeviceParams*=7373;
(unsigned32)Console_Port_Tbl[minor].pDeviceParams/=16000;
#else
/*
* Scale requested baud rate for 22.1184 MHz clock
*/
(unsigned32)Console_Port_Tbl[minor].pDeviceParams/=3;
#endif
/*
* In order to maintain maximum data rate accuracy, we will
* apply a div 4 here rather than in hardware (using MCR bit 7).
*/
(unsigned32)Console_Port_Tbl[minor].pDeviceParams/=4;
return(TRUE);
}
static boolean config_z85c30_probe(int minor)
{
/*
* PPC1 and PPC1a do not have this device
*/
if((ucSystemType==SYS_TYPE_PPC1) ||
(ucSystemType==SYS_TYPE_PPC1a))
{
return (FALSE);
}
/*
* All other boards supported by this BSP have the z85c30 device
*/
/*
* Ensure that CIO port B is configured for
* default driver enable
*/
outport_byte(0x861, 0x33);
return(TRUE);
}
